Tuol Sleng Genocide Museum
The Tuol Sleng Genocide Museum is one of Cambodia’s most important historical sites. Originally a high school called Tuol Svay Prey, it was turned into Security Prison 21 (S-21) by the Khmer Rouge in 1975 after they took control of the country. Between 1975 and 1979, during the rule of Pol Pot, an estimated 12,000–20,000 prisoners were held, tortured, and forced to confess to crimes before being sent to execution sites such as the Killing Fields. Only a small number of prisoners survived. After the regime fell in 1979, the site was preserved and officially opened as a museum to educate visitors about the atrocities committed during this period.
Today, the museum serves as both a memorial and an educational center, attracting visitors from around the world who want to learn about Cambodia’s history. The preserved classrooms, prison cells, photographs of victims, and torture instruments provide a powerful and emotional experience. Audio guides are available in multiple languages, and guided tours help explain the historical context of the Cambodian genocide. The museum plays a key role in remembrance, justice awareness, and reconciliation, making it an important stop for tourists visiting Phnom Penh.
Tuol Sleng Genocide Museum is located in Phnom Penh, Cambodia, and is generally open daily from 8:00 AM to 5:00 PM (including weekends and most public holidays). The entrance fee is approximately $5 USD for foreign adults, with additional fees for audio guides; Cambodian citizens usually have free or reduced entry. Visitors can contact the museum directly through its official website or by phone for updated information about ticket prices, group visits, and educational programs. It is recommended to dress respectfully, as the site is a place of remembrance.
